Arre.st W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
The “center” element is obsolete. Use CSS instead.
“=” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Attribute “border:” not allowed on element “iframe” at this point.
Attribute “none;” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
Element “ul” not allowed as child of element “ol” in this context. (Suppressing further errors from this subtree.)
End tag “nav” seen, but there were open elements.
Unclosed element “div”.
Stray end tag “div”.
Warnings:
Attribute “border:” is not serializable as XML 1.0.
Attribute “none;” is not serializable as XML 1.0.
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